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Contents
#
# Time math is handled slightly differently. The difference is considered to be an exact duration if
# the subtracted value is in hours, minutes, or seconds. It is rounded to the nearest day if the offset
# is in years, decades, or centuries. This leads to less precise values, but ones that match the
# calendar better.
class Time
class << self
alias unit_time_at at
end
# Convert a duration to a Time value by considering the duration to be the number of seconds since the
# epoch
def self.at(arg)
case arg
when Unit
unit_time_at(arg.to("s").scalar)
else
unit_time_at(arg)
end
end
def to_unit(other = nil)
other ? Unit.new(self).to(other) : Unit.new(self)
end
alias :unit :to_unit
alias :u :to_unit
alias :unit_add :+
unless Time.instance_methods.include?(:to_date)
def to_date
x=(Date.civil(1970,1,1)+((self.to_f+self.gmt_offset)/86400.0)-0.5)
Date.civil(x.year, x.month, x.day)
end
end
def +(other)
case other
when Unit
other = other.to('d').round.to('s') if ['y', 'decade', 'century'].include? other.units
begin
unit_add(other.to('s').scalar)
rescue RangeError
self.to_datetime + other
end
else
unit_add(other)
end
end
# usage: Time.in '5 min'
def self.in(duration)
Time.now + duration.to_unit
end
alias :unit_sub :-
def -(other)
case other
when Unit
other = other.to('d').round.to('s') if ['y', 'decade', 'century'].include? other.units
begin
unit_sub(other.to('s').scalar)
rescue RangeError
self.send(:to_datetime) - other
end
else
unit_sub(other)
end
end
end
Version data entries
6 entries across 6 versions & 2 rubygems